Culture

Is Your New City Giving You Allergies?

Geographic and genetic reasons why you're sneezing more after a move.
Reuters/Carlo Allegri

Dear CityLab: I recently moved to a new city, and almost as soon as I arrived, I started experiencing seasonal allergy symptoms. Am I allergic to my new city?

Yes and no. Allergists say it typically takes two to five years to become sensitized to an allergen, and the clock starts ticking from the point of exposure, which means the flora of your previous city might share the blame.